GONADOTROPIN-RELEASING-HORMONE AND PROSTAGLANDIN-F2-ALPHA FOR POSTPARTUM DAIRY-COWS - ESTROUS, OVULATION, AND FERTILITY TRAITS
GONADOTROPIN-RELEASING-HORMONE AND PROSTAGLANDIN-F2-ALPHA FOR POSTPARTUM DAIRY-COWS - ESTROUS, OVULATION, AND FERTILITY TRAITS
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DOI：
10.3168/jds.s0022-0302(86)80469-6
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发表时间：
1986-03-01
影响因子：
3.5
通讯作者：
STEVENSON, JS
中科院分区：
文献类型：
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作者：
BENMRAD, M;STEVENSON, JS
对234头荷斯坦奶牛进行研究以确定促性腺激素释放激素，前列腺素F2 α，或两者都将改变发情和排卵的频率和发生以及随后的生育能力。第1组和第2组的奶牛在产后10至14天接受促性腺激素释放激素（200 μ g），第3组和第4组的奶牛接受盐水。10天后，第2组和第3组的奶牛接受前列腺素F2 α。(25 mg），第1组和第4组的奶牛接受生理盐水。用促性腺激素释放激素治疗减少了第一次排卵和第一次检测到发情的间隔，并增加了第一次服务前三次或三次以上排卵的奶牛比例，从盐水治疗对照组的57%增加到83%。用前列腺素F2 α治疗。缩短了第二次和第三次排卵的间隔，缩短了第一次发情周期。第1组和第3组奶牛的给药增加了发情周期持续时间正常的奶牛比例。用促性腺激素释放激素或前列腺素F2 α治疗产褥期异常的奶牛，从产犊到受孕的间隔缩短了43 - 48天。与对照组（第4组）相比，第1组和第3组中所有奶牛在27 - 29天内的总死亡率。组1和组3中产褥期正常或异常的奶牛每次受孕所需的服务比对照组少26 - 41%。我们得出结论，促性腺激素释放激素或前列腺素F2 α，但不是治疗组合，提高了奶牛的生育力，特别是那些经历产褥期问题的奶牛。
A study of 234 Holstein cows was conducted to determine if early postpartum treatments of gonadotrophin-releasing hormone, prostanglandin F2.alpha., or both would alter frequency and occurrence of estrus and ovulation as well as subsequent fertility. Cows in groups 1 and 2 received gonadotropin-releasing hormone (200 .mu.g) between 10 and 14 d postpartum, and cows in groups 3 and 4 received saline. Ten days later, cows in groups 2 and 3 received prostaglandin F2.alpha. (25 mg), and cows in groups 1 and 4 received saline. Treatment with gonadotropin-releasing hormone reduced intervals to first ovulation and first detected estrus as well as increasing the proportion of cows with three or more ovalations before first serve from 57% for saline-treated controls to 83%. Treatment with prostaglandin F2.alpha. reduced intervals to second and third ovulation and shortened the first estrous cycle. Treatments for cows in groups 1 and 3 increased the proportion of cows having estrous cycles of normal duration. Interval from calving to conception was reduced by 43 to 48 d for cows with an abnormal puerperium treated with either gonadotropin-releasing hormone or prostaglandin F2.alpha. compared with controls (group 4) and by 27 to 29 d overall in all cows in groups 1 and 3. Cows with normal or abnormal puerperium in groups 1 and 3 required 26 to 41% fewer services per conception than controls. We conclude that treatments of gonadotropin-releasing hormone or prostaglandin F2.alpha., but not the treatment combination, improved fertility of dairy cows, especially those that experienced puerperal problems.